--- title: "A9s vs T9s: preflop equity" url: "https://georgelipoker.com/equity/a9s-vs-t9s.md" canonical_url: "https://georgelipoker.com/equity/a9s-vs-t9s" last_updated: "2026-10-23" type: "reference" summary: "A9s is a big favorite over T9s before the flop: 66.99% to 33.01% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/a9s-vs-33.md", "https://georgelipoker.com/equity/a9s-vs-t8s.md", "https://georgelipoker.com/equity/ato-vs-t9s.md"] --- # A9s vs T9s: preflop equity A9s is a big favorite over T9s before the flop: 66.99% to 33.01% equity, counted exactly over every board, with the split by flop type and suit. The exact count puts A9s at 66.99% and T9s at 33.01% when the two hands see all five board cards. ## A9s against T9s: the numbers **Exact preflop results for A9s against T9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | A9s | 66.134 | 1.718 | 32.148 | 66.993 | | T9s | 32.148 | 1.718 | 66.134 | 33.007 | A9s and T9s are both suited hands. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing. A lead of 33.98 points is large but not decisive: T9s still takes about 322 of every 1,000 deals. 1.72% of boards are ties, so the equity of each hand is its win rate plus half of that. For context, A9s sits at number 18 of 169 starting hands and T9s at number 64 when each is run against a random hand. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | A9s | 13,589,000 | 353,000 | 6,606,000 | | T9s | 6,606,000 | 353,000 | 13,589,000 | The board total is exact, 12 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **A9s against T9s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | A9s | 2.030 | 1.512 | 3.111 | 0.493 | | T9s | 0.493 | 3.111 | 1.512 | 2.030 | The final column gives the least the pot must offer for each unit called for a call to break even at this equity. ## Who is ahead on which flops A9s prefers low rainbow flops (nine high or lower), where it holds 76.01%, and likes monotone flops least, where it holds 61.21%. A9s stays ahead on all five textures. **A9s against T9s by flop texture, in percent** | Flop | Share of flops | A9s wins | Ties | T9s wins | A9s equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 64.672 | 1.546 | 33.782 | 65.445 | | Rainbow, nine or lower | 6.314 | 75.141 | 1.745 | 23.114 | 76.014 | | Two-tone | 46.543 | 64.804 | 1.391 | 33.805 | 65.499 | | Monotone | 5.215 | 59.251 | 3.922 | 36.827 | 61.212 | | Paired | 17.333 | 70.570 | 2.168 | 27.262 | 71.654 | Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank. ## Compared with a random hand A random hand would give A9s 62.78% and T9s 54.03%. Against each other the change is +4.21 points for A9s and -21.02 for T9s. **A9s and T9s here compared with each against a random hand, in percent** | Case | Equity here | Against a random hand | Change in points | Times the random-hand equity | | --- | --- | --- | --- | --- | | A9s, all flops | 66.993 | 62.781 | +4.212 | 1.06709 | | A9s, rainbow, ten or higher | 65.445 | 62.781 | +2.664 | 1.04243 | | A9s, rainbow, nine or lower | 76.014 | 62.781 | +13.233 | 1.21078 | | A9s, two-tone | 65.499 | 62.781 | +2.718 | 1.04329 | | A9s, monotone | 61.212 | 62.781 | -1.569 | 0.97501 | | A9s, paired | 71.654 | 62.781 | +8.873 | 1.14133 | | T9s, all flops | 33.007 | 54.028 | -21.021 | 0.61092 | | T9s, rainbow, ten or higher | 34.555 | 54.028 | -19.473 | 0.63958 | | T9s, rainbow, nine or lower | 23.986 | 54.028 | -30.042 | 0.44395 | | T9s, two-tone | 34.501 | 54.028 | -19.527 | 0.63858 | | T9s, monotone | 38.788 | 54.028 | -15.240 | 0.71792 | | T9s, paired | 28.346 | 54.028 | -25.682 | 0.52465 | ## Does a shared suit matter? For this pair the shared-suit row is empty: the two hands cannot both own a card of one suit without reusing a card. **A9s against T9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | A9s wins | Ties | T9s wins | A9s equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 66.134 | 1.718 | 32.148 | 66.993 | ## How often this matchup comes up This page stands for 12 specific-card matchups (0.0007% of 1,624,350 ordered deals), or 24 once you count the seats both ways (0.0015%). ## A worked example Try it with money: two players each put in $100 and the whole board runs out every possible way. A9s averages $133.98 from the $200, up $33.98; T9s averages $66.02, down $33.98. Out of 1,000 deals you should see around 661 outright wins for A9s, 322 for T9s, and 17 split pots. ## The same matchup from the other side Read it from the other side: T9s against A9s is the same matchup with the numbers swapped, so T9s holds 33.01% and A9s holds 66.99%. That address sends you back to this page. ## Keep exploring As9s against Th9h is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength. - [Open As9s against Th9h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As9s&p2=Th9h) - [A9s combos](https://georgelipoker.com/combos/a9s.md) - [T9s combos](https://georgelipoker.com/combos/t9s.md) - [A9s vs 33](https://georgelipoker.com/equity/a9s-vs-33.md) - [A9s vs T8s](https://georgelipoker.com/equity/a9s-vs-t8s.md) - [ATo vs T9s](https://georgelipoker.com/equity/ato-vs-t9s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 12 specific deals, with both seven-card hands compared each time. Equity gives half a win for a tie. For the flop rows, a board is counted once under each of the ten flops inside it. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [A9s vs 33: preflop equity](https://georgelipoker.com/equity/a9s-vs-33.md) - [A9s vs T8s: preflop equity](https://georgelipoker.com/equity/a9s-vs-t8s.md) - [ATo vs T9s: preflop equity](https://georgelipoker.com/equity/ato-vs-t9s.md)